5’s Flashcards
(51 cards)
Engine oil pressure limits
Pressure limits for:
NG at ground idle - 5 psi NG 80% to 95% - 32 psi NG equal to or greater than 95% - 50 psi Normal operation - 35 to 90 psi Maximum for contingency power - 110 psi Maximum for cold weather starts - 150 psi
Max engine oil temperature (at what temperature does caution activate)?
149 C
ENG XMSN oil temperature limits.
Caution vs Warning
Caution activates greater than 140 C
Warning activates greater than 190 C
XMSN oil temperature limits. (At what temperature does caution activate)?
Greater than 140 C
XMSN oil pressure limits.
Minimum at ground idle- 7 psi
Minimum at 100% NR - 20 psi
Normal operation - 20 to 90 psi
Flight Control Hydraulic Pressure normal operating range
2,500 to 3,200 psi
Utility System Hydraulic Pressure normal operating range
2,500 to 3,500 psi
Hydraulic system temperature,
Cautionary range and max
Caution range 95-120 C
Max 120 C
Rotor speed limitations
Minimum transient power on- 91% Transient - 91% to 97% Normal range - 97% to 101% Transient - 101% to 106% Max power on - 106% Max autorotation - 108% *Maximum transient* - Max Transient per Table 5-5 is 111%. 111.5% only pertains to the note regarding the 2408-13-1 entry requirements.
Should NR exceed _____% but not ____%, no entry need be made on a form (BONUS), but willful operation will not be conducted in this range.
108%, 111.5%, DA Form 2408-13-1
CGI ranges
Green - normal operation
Yellow - transient
Red - avoid
White - test
Flight with NR equal to or less than ____% with an inoperative CGI is ________.
98%, prohibited
Any excursion into the red or yellow band of the CGI for more than ____________ requires and entry on DA Form 2408-13-1.
45 seconds
The APU shall not be started with a tailwind in excess of ________knots.
25 knots
Main engines shall not be started with a tailwind in excess of ________knots.
10 knots
If it becomes necessary to shutdown outside of [tail] wind limits shown in figure 5-6 or 5-7, the following precautions are recommended:
Aircraft should land in an area which is
- clear
- level as possible
- at least 300 feet away from verticals obstructions
- positioned so that wind is coming at the aircraft from the left side
PTIT Limits
MAX continuous- up to 816 C
30 minutes - 816 to 854 C
10 minute - 854 to 899 C
2.5 minute(contingency)- 899 to 932 C
12 seconds (MAX TRANS)- 932 to 943 C
NG limits
Ground idle minimum- 50%
Maximum- 111%
Max NP speed (%)
111.5%
Only those fuels listed in ______________ shall be used. Emergency fuel shall not be used for more than ________ cumulative time
Chapter 2
6 hours
Max GWT
50k
Cargo hook(s) limitations
FWD or AFT hooks- 17k
Tandem load- 25k
Center hook- 26k
When a combination of internal and external loads are carried on the same flight and external load exceeds _________ pounds, internal load should be positioned forward of the ________.
12k
Utility hatch
Cargo Winch weight limitations
The cargo winch is rated at 3,000 lbs straight pull. With one pulley the mechanical advantage is doubled to 6,000 lbs. 2 pulleys gets you 9,000 lbs and 3 pulleys the grand total of 12,000 lbs. 5-4 Helicopter Loading Limits paragraph d. (PDF Page 711)
